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made COM_FindFile to accept both file and handle as NULL. Added

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COM_FileExists as a new helper procedure which calls COM_FindFile
with both file and handle parameters as NULL.


git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@373 af15c1b1-3010-417e-b628-4374ebc0bcbd
This commit is contained in:
Ozkan Sezer 2011-01-05 18:01:15 +00:00
parent db70c054fa
commit ceb1dd2186
2 changed files with 29 additions and 9 deletions
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37
Quake/common.c
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@ -1451,6 +1451,8 @@ COM_FindFile
Finds the file in the search path.
Sets com_filesize and one of handle or file
If neither of file or handle is set, this
can be used for detecting a file's presence.
===========
*/
static int COM_FindFile (const char *filename, int *handle, FILE **file,
@ -1464,8 +1466,6 @@ static int COM_FindFile (const char *filename, int *handle, FILE **file,
if (file && handle)
Sys_Error ("COM_FindFile: both handle and file set");
if (!file && !handle)
Sys_Error ("COM_FindFile: neither handle or file set");
file_from_pak = 0;
@ -1483,21 +1483,21 @@ static int COM_FindFile (const char *filename, int *handle, FILE **file,
if (!strcmp (pak->files[i].name, filename))
{ // found it!
// Sys_Printf ("PackFile: %s : %s\n",pak->filename, filename);
file_from_pak = 1;
com_filesize = pak->files[i].filelen;
if (path_id)
*path_id = search->path_id;
if (handle)
{
*handle = pak->handle;
Sys_FileSeek (pak->handle, pak->files[i].filepos);
}
else
else if (file)
{ // open a new file on the pakfile
*file = fopen (pak->filename, "rb");
if (*file)
fseek (*file, pak->files[i].filepos, SEEK_SET);
}
file_from_pak = 1;
com_filesize = pak->files[i].filelen;
if (path_id)
*path_id = search->path_id;
return com_filesize;
}
}
@ -1521,12 +1521,18 @@ static int COM_FindFile (const char *filename, int *handle, FILE **file,
if (path_id)
*path_id = search->path_id;
if (handle)
{
*handle = i;
else
}
else if (file)
{
Sys_FileClose (i);
*file = fopen (netpath, "rb");
}
else
{
Sys_FileClose (i);
}
return com_filesize;
}
@ -1536,13 +1542,26 @@ static int COM_FindFile (const char *filename, int *handle, FILE **file,
if (handle)
*handle = -1;
else
else if (file)
*file = NULL;
com_filesize = -1;
return -1;
}
/*
===========
COM_FileExists
Returns com_filesize if file is found in the quake filesystem,
-1 if not. Closes the files it opens, if any.
===========
*/
int COM_FileExists (const char *filename, unsigned int *path_id)
{
return COM_FindFile (filename, NULL, NULL, path_id);
}
/*
===========
COM_OpenFile

1
Quake/common.h
View file

@ -188,6 +188,7 @@ extern int file_from_pak; // global indicating that file came from a pak
void COM_WriteFile (const char *filename, const void *data, int len);
int COM_OpenFile (const char *filename, int *handle, unsigned int *path_id);
int COM_FOpenFile (const char *filename, FILE **file, unsigned int *path_id);
int COM_FileExists (const char *filename, unsigned int *path_id);
void COM_CloseFile (int h);
// these procedures open a file using COM_FindFile and loads it into a proper